Factors Affecting Visibility - Condensation and Evaporation
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Questions and Answers

What determines the direction of water vapor movement after evaporation?

  • The direction and pattern of wind flow in the region (correct)
  • The amount of radiation absorbed by gases and particles
  • The visibility distance at the time of evaporation
  • The temperature of the earth's surface

What is the primary cause of visibility degradation?

  • The absorption and scattering of light by particles and gases in the atmosphere (correct)
  • The evaporation of water from the earth's surface
  • The formation of clouds in the sky
  • The direction and pattern of wind flow in a region

What is a fog or mist?

  • A discoloration in the atmosphere caused by radiation absorption
  • A measure of the distance at which an object can be clearly seen
  • Water vapor moving vertically towards the sky
  • A cloud that has formed close to the earth's surface (correct)

What is the definition of visibility?

<p>The distance at which an object or light can be clearly discerned (C)</p> Signup and view all the answers

What is the visibility range considered as 'zero' visibility?

<p>Less than 100 meters (D)</p> Signup and view all the answers

What is the primary condition for the formation of fog?

<p>Air temperature equal to or below the dew point (D)</p> Signup and view all the answers

Which factor is not listed as a condition that can help clear fog?

<p>Decrease in relative humidity (A)</p> Signup and view all the answers

What is the primary difference between fog and haze?

<p>Haze involves dry particles, fog involves water droplets (D)</p> Signup and view all the answers

What visibility range defines the meteorological phenomenon as 'fog'?

<p>Less than 1 km (C)</p> Signup and view all the answers

What atmospheric condition is associated with the formation of haze?

<p>Relative humidity below 95% (C)</p> Signup and view all the answers

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